Improvement in reciprocating steam-engines



U. LAMB. Reciprocating Steam-Engines.

l\10.1 :s3,784.y

Patented Dec.10,1872 I l Jig'. 1.

RWI/eg@ Uivrrnn STATES CHARLES E. LAMB, OF WAUSEON, OHIO.

` IMPROVEMENT IN RECIPROCATING STEAM-ENGINES.

Specification forming part of VLetters Patent No. 133,734, dated December l0, 187.2.

To all whom it may concer/n: x,

Be it known that I, CHARLEs E. Lann, of Wauseon, in the county of Fulton and State ofv Ohio, have invented a new and useful Improvement in Steam Engines, of which the following is a specification:

This invention relates to new and useful improvements in steam-engines; and consists in the construction and arrangement of parts hereinafter described.

' In the accompanying drawing, Figure 1 represents a top or plan View of the engine; Fig. 2 is a vertical longitudinal section of Fig. 1 taken on the line x w,- Fig. 3 is a detail section on the line y y of Fig. l, showing the mode of producing the revolving movement of the valve; Fig. 4. is a vertical section of Fig. 2 on the'linc z z, showing the piston and valve-ports; Figs. 5 and 6 are sections through Fig. 4, showing the valve in two different positions, the sections being on the lines 2 2 and 3 3; and Fig. 7 is a sectional detail taken on the line z z of Fig. 2. v

Similar letters of reference indicate corresponding parts.

The distinguishing features of this invention are the arrangement and operation of an oscillating valve in the piston of the engine and .manner of introducing and: exhausting the steam. L

Ais the steamcylinder. B is the piston. C is a tubular piston-rod, on the end of which is the valve D, which valve is arranged With-l in the center of the piston and receives a rotary motion sufficient to change the ports and allow the cylinder to takeand exhaust steam at both ends at cach stroke 'of the engine.

, This rotating motion is produced by means of a pin, I, in the crotch E of the connectingrod F. On the end of the hollow piston-rod C is a collar, Gr, with two projecting lugs, H H, between which lugs the pin I works. The

y collar is made adjustable by means of the setscrew J. By means of this adjustment the 0valve is changed or set so as to cut off the steam sooner or later, -as may be required. rIhe extent of this revolving motion depends upon the distance' of the pin I from the center of the cross-head K. This distance is always supposed to be sufficient to turn-the valve and change the ports as the crotch of the connecting-rod is carried up and down by the engine-crank. The steam is admitted through the tube L, which is screwed into the end of the valve on the opposite side of the piston,as seen in Figs. 5 and 6.4 This tube L reciprocates in and is inclosed by the outside tube m, which connects with the boiler. As the piston works back and forth in the cylinder it is prevented from turning or partaking of the revolving motion of the valve by means of the straight rod N, (see Fig. 2,) which passes through the piston and is confined in the cylinder-heads, as represented. O O are the steam-ports, and P the exhaust-port of the valve. P is a port for simply balancing the valve. q q are ports in the piston through which the steam is admittedto and exhausted from each end of the cylinder by means of the revolving motion of the valve( In Fig. 5, which is the section on the line 3 3, the steam is Aexhausting from one end of the cylinder, while in'Fig. 6 the other end of the cylinder is taking steam.' These positions of the valve are reversed at every stroke of the engine, and the steam is admitted and performs its work 'and is exhausted with the same' regularity and precision as with the ordinary slide-valve, all the steam being admit ted through the pipe L and exhausted through the hollow piston-rod C. |lhe steam is exhausted from the piston-rod C by the pipe R,

Vand discharged into the pipe S beneath the engine, the latter pipe being stationary.A

The engine is mounted on an ordinary frame, T, with a fly-wheel, U, and crank-shaft V, and with a cross-head and slides arranged in the ordinary manner; but there is no steam-chest or valve apparatus visible, although a valve is operated` by a positive motion and can be set to cut off the steam according to the requirements of the engine, with the greatest ease, as heretofore described.

Having thus described my invention, I cl'aim as new and desire to secure by Letters Pat ent l. The oscillating valve l), in combination with the piston of a steam-engine, when arranged to operate substantially as and for the purposes described.

2. The combination of the valve D and tu- 4. The rod N, connecting the cylinder-heads buiar piston-rod C, tube L, and piston B, as and passing intermediately through the piston shown and described. v B, as and for the purpose specified.

3. The rod C, provided with the adjustable 5. The combination of the reciprocating eX- collar G havin g the lugs H and the pin I prohaust B, hollow piston-rod C, piston B, valve jecting from one of the arms of the connecting- D, and tube L, all shown and described.

rod F, in combination With the crank V and CHARLES E. LAMB. the piston B, as specified, whereby the vertical Witnesses:

oscillation of the connecting-rod serves to os` T. B. MOSHER,

cillate the valve, as set forth. ALEX. F. ROBERTS. 

